Features
- Add rule [I3042](https://github.com/aws-cloudformation/cfn-python-lint/blob/main/docs/rules.md#I3042) to check for hardcoded partitions, account IDs, and regions in an ARN (pull [1805](https://github.com/aws-cloudformation/cfn-python-lint/pull/1805))
- Allow for merging of list configurations using `--merge-configs` (pull [1915](https://github.com/aws-cloudformation/cfn-python-lint/pull/1915))
CloudFormation Specifications
- Update resource specs to `30.0.0` (pull [1911](https://github.com/aws-cloudformation/cfn-python-lint/pull/1911))
- Add Kinesis Data Firehose to permitted SNS subscription protocols (pull [1924](https://github.com/aws-cloudformation/cfn-python-lint/pull/1924))
- Changed DMS endpoint engine name for `DocumentDB` to `docdb` (pull [1920](https://github.com/aws-cloudformation/cfn-python-lint/pull/1920))
Fixes
- Update rule [E2532](https://github.com/aws-cloudformation/cfn-python-lint/blob/main/docs/rules.md#E2532) to add `ResultSelector` field to Task, Parallel & Map in step functions (pull [1912](https://github.com/aws-cloudformation/cfn-python-lint/pull/1912))
- Update rule [E1017](https://github.com/aws-cloudformation/cfn-python-lint/blob/main/docs/rules.md#E1017) to add `Fn::Select` to allowed value in index field of `Fn::Select` (pull [1922](https://github.com/aws-cloudformation/cfn-python-lint/pull/1922))